package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.handler.CustomException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    @Override
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //md5加密
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
        employee.setStatus(StatusConstant.ENABLE);
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setCreateUser(BaseContext.getCurrentId());
//        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.insert(employee);
    }

    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());
        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);
        //进一步封装返回值
        long total = page.getTotal();
        List<Employee> result = page.getResult();
        return new PageResult(total,result);
    }

    @Override
    public void setStatus(Integer status, Long id) {
        System.out.println("service接收到的状态:"+status + " id:" + id);
        Employee employee = new Employee();
        employee.setStatus(status);
        employee.setId(id);
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
        //employeeMapper.setStatusById(status,id);
    }

    @Override
    public Employee selectById(Long id) {
        Employee employee = employeeMapper.getById(id);
        return employee;
    }

    @Override
    public void updateById(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);
//        employee.setUpdateUser(BaseContext.getCurrentId());
//        employee.setUpdateTime(LocalDateTime.now());
        employeeMapper.update(employee);
    }

    @Override
    public void updatePassword(PasswordEditDTO passwordEditDTO) {
        //通过id获取用户
        Employee employee = employeeMapper.getById(passwordEditDTO.getEmpId());
        //对比原始密码
        String oldPassword = DigestUtils.md5DigestAsHex(passwordEditDTO.getOldPassword().getBytes());
        if(oldPassword.equals(employee.getPassword())){
            //修改新密码
            String newPassword = DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes());
            employee.setPassword(newPassword);
            employee.setUpdateUser(BaseContext.getCurrentId());
            employee.setUpdateTime(LocalDateTime.now());
            employeeMapper.update(employee);
        }else{
            //抛出异常
            throw new CustomException("输入的原始密码不正确");
        }


    }

}
